"""
import re

content = 'Hello 123 4567 World_this is a Regex Demo'
print(len(content))
result = re.match('^Hello\s\d\d\d\s\d{4}\s\w{10}', content)
print(result)
print(result.group())
print(result.span())
"""
import re

content = '1234567890 dark fire3@163.com or number: 18279540682'
result = re.match('^dark\s.*\s', content)
print(type(result))
print(result)